//更多搜索条件的相关方法
function moreSearch(){
    app.showMore = true;
}
function handleCheckAllChange(val){
    app.checkedSearch = val ? searchOptions : [];
    app.isIndeterminate = false;
}
function handleCheckedSearchChange(value){
    let checkedCount = value.length;
    app.checkAll = checkedCount === app.searches.length;
    app.isIndeterminate = checkedCount > 0 && checkedCount < app.searches.length;
}
